Pass & Seymour S4421RAC 4-In S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.11
$7.54
Pass & Seymour S4421RAC 4-In Square Electrical Box, Threaded Mounting Holes

Pass & Seymour S4421RAC 4-In Square Electrical Box, Threaded Mounting Holes

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Model: S44-21-RAC

In Stock (leaves warehouse same day if ordered before 3pm ET)

$58.11
$7.54
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Pass & Seymour S4421RAC 4-In Square Electrical Box, Threaded Mounting Holes

The Pass & Seymour S4421RAC is a 4-in square electrical box built with threaded mounting holes for simplified device and cover attachment. Molded from impact-resistant thermoplastic, this box features a rectangular cutout for easy installation and integrated Auto/Clamps on each end that eliminate the need for separate cable clamps. It is UL Listed for use in residential and commercial wiring applications where a durable, code-compliant junction or outlet box is required.

Key Features

  • Trade Size: 4-in square box footprint suited for standard outlet, switch, and junction box installations.
  • Durable Construction: Impact-resistant thermoplastic body resists cracking and damage during and after installation.
  • Threaded Mounting Holes: Pre-threaded holes simplify attaching devices, covers, and mounting hardware without additional fasteners.
  • Easy Installation: Rectangular cutout design streamlines box placement and wiring access.
  • Integrated Auto/Clamps: Clamps on each end secure incoming cable and eliminate the need for separate cable clamps, saving installation time.
  • Color: Grey thermoplastic finish for a clean, consistent appearance.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Country Of Origin: United States
  • Product Color: Grey
  • Product Line: Pass & Seymour

Typical Applications

  • Residential and Commercial Electrical Installations
  • Junction and Outlet Box Wiring
  • Device and Switch Mounting
  • New Construction and Renovation Projects

Why Pass & Seymour?

Pass & Seymour builds the S4421RAC from impact-resistant thermoplastic with integrated Auto/Clamps and threaded mounting holes, reducing installation steps while maintaining a durable, UL Listed enclosure. It's a dependable choice for electricians who need a reliable 4-in square box for everyday residential and commercial wiring work.

Manufacturer Resources

Spec Sheet

Product Specs

Product Material:
Thermoplastic
Product Type:
Outlet Box
Product Color:
Grey
Listing:
UL Listed
Country Of Origin:
United States
Department:
Electrical
Product Group:
Boxes & Enclosures
Product Subgroup:
Electrical Boxes
Product Length:
4.25 in
Product Width:
4.25 in
Product Depth:
1.5 in

Pass & Seymour S44-21-RAC – Frequently Asked Questions

1) Do I need separate cable clamps with the Pass & Seymour S4421RAC 4-inch square box?
No. The S4421RAC has integrated Auto/Clamps on each end, so incoming cable is secured by the box itself and you don't have to buy or install separate clamps. That's one less part on the truck and fewer steps per box on a rough-in.
2) Is the Pass & Seymour S4421RAC a metal or plastic box?
It's a nonmetallic box, molded from impact-resistant thermoplastic in grey. That means no separate bonding of the box itself the way a steel box requires, but it also means you cannot use it where a metallic raceway needs to terminate and bond to the enclosure. For conduit work, use a steel 4-inch square box instead.
3) Will the S4421RAC accept a standard 4-inch square cover or device ring?
Yes, the box uses the standard 4-inch square footprint, so 4-inch square covers, blank plates, and device rings land on it. Its mounting holes are pre-threaded, so covers and devices screw directly in without hunting for nuts or self-tapping screws.
4) Is the Pass & Seymour S4421RAC UL Listed for commercial work?
UL Listed, yes. Pass & Seymour lists the S4421RAC for residential and commercial wiring where a code-compliant junction or outlet box is called for, which covers typical switch, receptacle, and splice locations in new construction and renovation.
5) Can I use the S4421RAC as a junction box, or is it only for devices?
Both. The 4-inch square thermoplastic box works as a junction box for splices or as an outlet and switch box with the appropriate cover or device ring. The Auto/Clamps on each end handle the cable entries either way.
6) Where is the Pass & Seymour S4421RAC box made?
United States. For agencies and institutional buyers with domestic sourcing requirements on their submittals, that is the stated country of origin for this box.
How fast can I get the Pass & Seymour S44-21-RAC delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Pass & Seymour S44-21-RAC come with a warranty?
Absolutely. The Pass & Seymour S44-21-RAC is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Pass & Seymour S44-21-RAC?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Pass & Seymour S44-21-RAC from ZenSupply?
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